Carpenters Rule

 

Code Number: 7F10.30

Demo Title: Time Dilation - Carpenter's Rule

Condition: Excellent

Principle: Time Dilation

Area of Study: Modern Physics

Equipment: 

Carpenters Rule.

Procedure:

A folding carpenters rule can be used to illustrate the "light beam" ticks of a clock.  Different relativistic speeds can be shown by either expanding or contracting the angles at the verticies of the ruller.

References:

  • Robert Ehrilich, "12.6. Time Dilation Simulation", Why Toast Lands Jelly-Side Down, p. 184 - 185.
  • Stan Gibilisco, "Time Dilation", Puzzles, Paradoxes and Brain Teasers, p. 64 - 67.